Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si Charging time: about 150 minutes when fully with 4 batteries Charging temperature: 7-40 degrees Celsius Product features: full charge mode and storage charge mode Storage and charging mode: Long-term storage of 40%-60% battery capacity is the best. It is easy to the battery when it is stored at full power, and storage without power may cause the battery to fail. The storage mode is to charge the battery with a battery power of less than 2 bars to (about 60% of the power) for long-term storage. For 3 digital display charger Input voltage: AC 110-240V Battery port output: 17.6V/2.0A (MAX)*4 USB port output: 5V/3A Plug Type :EU Plug,it applies to Indonesia, Germany, France, , Italy and so on. Colour:gray Material:plastic Package Contents: 1 * Charger 4 * Battery cord 1 * Power cord Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.